HTML Tutorial for Beginners 15 – Adding CSS to HTML

In this tutorial, we’ll be adding some basic CSS styling to our HTML document.

CSS (Cascading Style Sheets) is a style sheet language used for describing the presentation of a document written in a markup language. It allows you to style all HTML tags, as well as their content and positioning.

To add CSS to an HTML document, you simply need to add a

' ); $( 'html' ).attr( 'style', 'margin-top: ' + mysticky_welcomebar_height + 'px !important' ); $( '#mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '0' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-top', '' ); jQuery( '#mysticky_divi_style' ).remove(); jQuery( '.et_fixed_nav #top-header' ).css( 'top', '' ); $( 'html' ).attr( 'style', 'margin-bottom: ' + mysticky_welcomebar_height + 'px !important' ); } }, trigger_sec ); } } } if ( $( window ).width() < 767 ) { if ( after_trigger == 'after_a_few_seconds' ) { if ( $( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-mobile' ) ) { var trigger_sec = jQuery( '.mysticky-welcomebar-fixed' ).data('triger-sec') * 1000; var welcombar_position = $( '.mysticky-welcomebar-fixed' ).data('position'); var welcombar_height = $( '.mysticky-welcomebar-fixed' ).outerHeight(); setTimeout(function(){ jQuery( '.mysticky-welcomebar-fixed' ).addClass( 'mysticky-welcomebar-animation' ); $( '.mysticky-welcomebar-fixed' ).addClass( 'entry-effect' ); jQuery( '#mysticky_divi_style' ).remove(); jQuery( '.et_fixed_nav #top-header' ).css( 'top', '' ); if ( welcombar_position == 'top' ) { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', ( adminBarHeight + 0) + 'px' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-bottom', '' ); $( 'html' ).attr( 'style', 'margin-top: ' + mysticky_welcomebar_height + 'px !important' ); $( '#mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '0' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-top', '' ); $( 'html' ).attr( 'style', 'margin-bottom: ' + mysticky_welcomebar_height + 'px !important' ); } }, trigger_sec ); } } } mystickyelements_present(); } $( window ).resize( function(){ var mysticky_welcomebar_height = jQuery( '.mysticky-welcomebar-fixed' ).outerHeight(); if( welcombar_aftersubmission == 'dont_show_welcomebar' ){ var welcomebar_storage = localStorage.getItem("welcomebar_close"); } else if( welcombar_aftersubmission == 'show_welcomebar_next_visit' ) { var welcomebar_storage = sessionStorage.getItem("welcomebar_close"); } else { sessionStorage.removeItem('welcomebar_close'); localStorage.removeItem('welcomebar_close'); var welcomebar_storage = null; } if ( welcomebar_storage === null ){ var after_trigger = jQuery( '.mysticky-welcomebar-fixed' ).data('after-triger'); if ( ! $( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-notapper' ) ) { jQuery( 'body' ).addClass( 'mysticky-welcomebar-apper' ); } else { jQuery( 'body' ).removeClass( 'mysticky-welcomebar-apper' ); } if ( after_trigger == 'after_a_few_seconds' ) { var trigger_sec = jQuery( '.mysticky-welcomebar-fixed' ).data('triger-sec') * 1000; var welcombar_position = $( '.mysticky-welcomebar-fixed' ).data('position'); var welcombar_height = $( '.mysticky-welcomebar-fixed' ).outerHeight(); if ( $( window ).width() < 767 ) { if ( $( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-mobile' ) ) { setTimeout(function(){ jQuery( '.mysticky-welcomebar-fixed' ).addClass( 'mysticky-welcomebar-animation' ); $( '.mysticky-welcomebar-fixed' ).addClass( 'entry-effect' ); jQuery( '#mysticky_divi_style' ).remove(); jQuery( '.et_fixed_nav #top-header' ).css( 'top', '' ); if ( welcombar_position == 'top' ) { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', ( adminBarHeight + 0) + 'px' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-bottom', '' ); $( 'html' ).attr( 'style', 'margin-top: ' + mysticky_welcomebar_height + 'px !important' ); $( '.mysticky-welcomebar-apper #mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '0' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-top', '' ); $( 'html' ).attr( 'style', 'margin-bottom: ' + mysticky_welcomebar_height + 'px !important' ); } }, trigger_sec ); } } else { if ( $( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-desktop' ) ) { setTimeout(function(){ jQuery( '.mysticky-welcomebar-fixed' ).addClass( 'mysticky-welcomebar-animation' ); $( '.mysticky-welcomebar-fixed' ).addClass( 'entry-effect' ); if ( welcombar_position == 'top' ) { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', ( adminBarHeight + 0) + 'px' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-bottom', '' ); jQuery( '#mysticky_divi_style' ).remove(); jQuery( '.mysticky-welcomebar-apper.et_fixed_nav #top-header' ).css( 'top', welcombar_height + 'px' ); jQuery( 'head' ).append( '' ); $( 'html' ).attr( 'style', 'margin-top: ' + mysticky_welcomebar_height + 'px !important' ); $( '.mysticky-welcomebar-apper #mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '0' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-top', '' ); jQuery( '#mysticky_divi_style' ).remove(); jQuery( '.et_fixed_nav #top-header' ).css( 'top', '' ); $( 'html' ).attr( 'style', 'margin-bottom: ' + mysticky_welcomebar_height + 'px !important' ); } }, trigger_sec ); } } } mystickyelements_present(); } } ); jQuery(window).on( 'scroll', function(){ if( welcombar_aftersubmission == 'dont_show_welcomebar' ){ var welcomebar_storage = localStorage.getItem("welcomebar_close"); } else if( welcombar_aftersubmission == 'show_welcomebar_next_visit' ) { var welcomebar_storage = sessionStorage.getItem("welcomebar_close"); } else { sessionStorage.removeItem('welcomebar_close'); localStorage.removeItem('welcomebar_close'); var welcomebar_storage = null; } if ( welcomebar_storage === null ){ var welcombar_height = $( '.mysticky-welcomebar-fixed' ).outerHeight(); var welcombar_position = $( '.mysticky-welcomebar-fixed' ).data('position'); if ( welcombar_position == 'top' ) { $( '#mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } if ( after_trigger === 'after_scroll' ) { var scroll = 100 * $(window).scrollTop() / ($(document).height() - $(window).height()); var after_scroll_val = jQuery( '.mysticky-welcomebar-fixed' ).data('triger-sec'); var welcombar_position = $( '.mysticky-welcomebar-fixed' ).data('position'); var welcombar_height = $( '.mysticky-welcomebar-fixed' ).outerHeight(); if( scroll > after_scroll_val ) { if ( $( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-desktop' ) ) { if ( $( window ).width() > 767 ) { jQuery( '.mysticky-welcomebar-fixed' ).addClass( 'mysticky-welcomebar-animation' ); $( '.mysticky-welcomebar-fixed' ).addClass( 'entry-effect' ); if ( welcombar_position == 'top' ) { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', (adminBarHeight+ 0 ) + 'px' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-bottom', '' ); $( 'html' ).attr( 'style', 'margin-top: ' + mysticky_welcomebar_height + 'px !important' ); $( '#mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '0' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-top', '' ); $( 'html' ).attr( 'style', 'margin-bottom: ' + mysticky_welcomebar_height + 'px !important' ); } } } if ( $( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-mobile' ) ) { if ( $( window ).width() < 767 ) { jQuery( '.mysticky-welcomebar-fixed' ).addClass( 'mysticky-welcomebar-animation' ); $( '.mysticky-welcomebar-fixed' ).addClass( 'entry-effect' ); if ( welcombar_position == 'top' ) { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', ( adminBarHeight +0 ) + 'px' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-bottom', '' ); $( 'html' ).attr( 'style', 'margin-top: ' + mysticky_welcomebar_height + 'px !important' ); $( '#mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '0' ); jQuery( '.mysticky-welcomebar-fixed' ).css( 'opacity', '1' ); $( 'html' ).css( 'margin-top', '' ); $( 'html' ).attr( 'style', 'margin-bottom: ' + mysticky_welcomebar_height + 'px !important' ); } } } } } mystickyelements_present(); } }); jQuery( '.mysticky-welcomebar-close, .mysticky-welcomebar-btn a' ).on( 'click', function(){ if( welcombar_aftersubmission != 'show_welcomebar_every_page' ){ if( welcombar_aftersubmission == 'dont_show_welcomebar' ){ sessionStorage.removeItem('welcomebar_close'); localStorage.setItem('welcomebar_close', 'close'); } else if( welcombar_aftersubmission == 'show_welcomebar_next_visit' ) { localStorage.removeItem('welcomebar_close'); sessionStorage.setItem('welcomebar_close', 'close'); } } var welcombar_position = $( '.mysticky-welcomebar-fixed' ).data('position'); var welcombar_height = $( '.mysticky-welcomebar-fixed' ).outerHeight(); jQuery( '.mysticky-welcomebar-fixed' ).addClass( 'mysticky-welcomebar-notapper' ); jQuery( 'body' ).removeClass( 'mysticky-welcomebar-apper' ); jQuery( '.mysticky-welcomebar-fixed' ).slideUp( 'slow' ); if ( welcombar_position == 'top' ) { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', '-' + mysticky_welcomebar_height + 'px' ); } else { jQuery( '.mysticky-welcomebar-fixed' ).css( 'bottom', '-' + mysticky_welcomebar_height + 'px' ); } jQuery( '#mysticky_divi_style' ).remove(); jQuery( '.et_fixed_nav #top-header' ).css( 'top', '' ); jQuery( 'html' ).css( 'margin-top', '' ); jQuery( 'html' ).css( 'margin-bottom', '' ); $( '#mysticky-nav' ).css( 'top', '0px' ); /*if mystickyelements show*/ var mystickyelements_show = $( '.mystickyelements-fixed' ).length; if( mystickyelements_show && $( window ).width() <= 1024 && $( '.mystickyelements-fixed' ).hasClass( 'mystickyelements-position-mobile-top' ) && welcombar_position == 'top' ) { var mystickyelements_height = $( '.mystickyelements-fixed' ).height(); $( '.mystickyelements-fixed' ).css( 'top', '' ); $( 'html' ).attr( 'style', 'margin-top: ' + mystickyelements_height + 'px !important' ); } } ); }); function mystickyelements_present() { var after_trigger = jQuery( '.mysticky-welcomebar-fixed' ).data('after-triger'); var mystickyelements_show = jQuery( '.mystickyelements-fixed' ).length; var welcombar_position = jQuery( '.mysticky-welcomebar-fixed' ).data('position'); var adminBarHeight = 0; if ( jQuery("#wpadminbar").length != 0 ){ var adminBarHeight = jQuery('#wpadminbar').height(); } if ( jQuery( window ).width() <= 600 && jQuery(window).scrollTop() != 0 && welcombar_position == 'top') { jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', '0px' ); var welcombar_height = jQuery( '.mysticky-welcomebar-fixed' ).outerHeight(); jQuery( '#mysticky-nav' ).css( 'top', welcombar_height + 'px' ); } else if ( welcombar_position == 'top' ) { var mysticky_welcomebar_height = adminBarHeight + jQuery( '.mysticky-welcomebar-fixed' ).outerHeight(); jQuery( '.mysticky-welcomebar-fixed' ).css( 'top', ( adminBarHeight + 0) + 'px' ); jQuery( '#mysticky-nav' ).css( 'top', mysticky_welcomebar_height + 'px' ); } if( mystickyelements_show ) { var welcombar_height = jQuery( '.mysticky-welcomebar-fixed' ).outerHeight(); var mystickyelements_height = jQuery( '.mystickyelements-fixed' ).height(); var mystickyelements_total_height = welcombar_height + mystickyelements_height; if ( jQuery( window ).width() <= 1024 && jQuery( '.mystickyelements-fixed' ).hasClass( 'mystickyelements-position-mobile-top' ) ) { if ( after_trigger == 'after_a_few_seconds' ) { if ( jQuery( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-mobile' ) ) { var trigger_sec = jQuery( '.mysticky-welcomebar-fixed' ).data('triger-sec') * 1000; setTimeout(function(){ if ( welcombar_position == 'top' ) { jQuery( '.mystickyelements-fixed' ).css( 'top', welcombar_height ); jQuery( 'html' ).attr( 'style', 'margin-top: ' + mystickyelements_total_height + 'px !important' ); } else { jQuery( '.mystickyelements-fixed' ).css( 'top', '' ); jQuery( 'html' ).attr( 'style', 'margin-bottom: ' + welcombar_height + 'px !important' ); } }, trigger_sec ); } } else if ( after_trigger === 'after_scroll' ) { var scroll = 100 * $(window).scrollTop() / ($(document).height() - $(window).height()); var after_scroll_val = $( '.mysticky-welcomebar-fixed' ).data('triger-sec'); if( scroll > after_scroll_val ) { if ( jQuery( '.mysticky-welcomebar-fixed' ).hasClass( 'mysticky-welcomebar-display-mobile' ) ) { if ( welcombar_position == 'top' ) { jQuery( '.mystickyelements-fixed' ).css( 'top', welcombar_height ); jQuery( 'html' ).attr( 'style', 'margin-top: ' + mystickyelements_total_height + 'px !important' ); } else { jQuery( '.mystickyelements-fixed' ).css( 'top', '' ); jQuery( 'html' ).attr( 'style', 'margin-bottom: ' + welcombar_height + 'px !important' ); } } } } } } } jQuery(".mysticky-welcomebar-fixed").on( "animationend MSAnimationEnd webkitAnimationEnd oAnimationEnd", function() { jQuery(this).removeClass("animation-start"); } ); jQuery(document).ready(function() { var container = jQuery(".mysticky-welcomebar-fixed"); var refreshId = setInterval(function() { container.addClass("animation-start"); }, 3500); });