body {
    background-color: #181E2C;
    margin: 0;
    padding: 0;
}

h1 {  
    width: 388px; 
    height: 258px;
    text-align: center;
    background: url('../img/circle.svg') no-repeat center top;
    position: relative;
    margin: auto;
    margin-top: 300px;
}
@media only screen and (max-width: 600px) {
    h1{
        width: 250px;
    }
       
}