<h1>Hello World!</h1>
/* ホバー時 */
.sns-group-viral 
ul.snsb li.twitter-btn-icon a:hover{
 background-color:#55acee;
}
.sns-group-viral 
ul.snsb li.facebook-btn-icon a:hover{
 background-color:#3b5998;
}
.sns-group-viral 
ul.snsb li.hatena-btn-icon a:hover{
 background-color:#3C7DD1;
}
.sns-group-viral ul.snsb li.pocket-btn-icon a:hover{
 background-color:#EE4257;
}
.sns-group-viral ul.snsb li.feedly-btn-icon a:hover{
 background-color:#87bd33;
}
.sns-group-viral ul.snsb li.line-btn-icon a:hover{
 background-color:#33ff33;
}
document.getElementsByTagName("h1")[0].style.fontSize = "80px";

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External JavaScript

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