*{
    box-sizing:border-box;
}

body{
    background-color:#FFF;
    font-family:Arial, Helvetica, sans-serif;
    margin:0;
}

button{
    cursor:pointer;

}
button:active{
    transform:scale(0.95);
}

input:focus,
button:focus{
    outline:none;
}

header{
    background-image:url('https://images.unsplash.com/photo-1510915361894-db8b60106cb1?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1950&q=80');
    background-repeat: no-repeat;
    background-size:cover;
    background-position:center center;
    color:#FFF;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    padding:100px 0;
    position:relative;
}
header::after{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background-color:rgba(0,0,0,0.4);
}

header *{
    z-index:1;
}

header h1{
 margin:0 0 30px;
}

form{
    position:relative;
    width:500px;
    max-width:100%;
}

form input{
    border:0;
    border-radius:50px;
    font-size:16px;
    padding:15px 30px;
    width:100%;
}

form button{
    background-color:#900d0d;
    border:0;
    border-radius:50px;
    color:#FFF;
    font-size:16px;
    padding:13px 30px;
    position: absolute;
    top:2px;
    right:2px;
}
#signature{
    position:fixed;
    top:0;
    right:5px;
    color:#e0e0e0;
    z-index:999;
    font-size:0.7em;
    padding:5px;
    
}

.btn{
    background-color:#cf1b1b;
    border:0;
    border-radius:10px;
    color:#FFF;
    padding:4px 10px;
}

ul.songs {
    list-style-type: none;
    padding:0;
}

ul.songs li{
    display:flex;
    align-items:center;
    justify-content: space-between;
    margin:10px 0;
}

.container{
    margin:30px auto;
    max-width:100%;
    width:600px;
}

.container h2{
    font-weight:300;
}

.container p{
    text-align:center;
}

.centered{
    display:flex;
    justify-content: center;
}

.centered button{
    transform:scale(1.3);
    margin:15px;
}