body{background:;background-size:100%}.title{padding-left:50%;padding-top:10%}.introduction-div{padding-left:50%;padding-top:4%}.button-div{padding-top:4%;padding-left:5%}#welcome{width:60%}#introduction-txt{width:80%}#loud-speaker{width:30%}#play-button{padding-left:30%;width:46%}