body {
    background: #EEAECA;
    background:  radial-gradient(circle, rgba(238, 174, 202, 1) 0%, rgba(148, 187, 233, 1) 100%);
}

.line {
    position: fixed;
    top: 500px;
    left: 50%;
    margin-left: 50px;
    margin-bottom: 100px;
    width: 600px;
    height: 100px;
    background:#fff;
    border-radius: 100px;
}

.circle{ 
    width:100px ;
    height:100px ;
    border-radius: 100%;
    position: fixed;
    top: 450px;
    left: 800px;
    background: #ff0000;
}

.bob:hover{ 
    background: #00ff9d;    
}
.bob-2:hover { 
    background: #000000;    
}