@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');
 
body{
    background: linear-gradient(to right, 	#DCDCDC, 	#DCDCDC, 	#DCDCDC);
    font-family: 'Roboto', sans-serif;
}
 
.kotak{
width: 400px;
    height: 40px;
    border: solid 3px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    padding-top: 10px;
    display: block;
    font-size: 24px;
    text-decoration: none;
    color: black;
    margin-bottom: 10px;
}
 
.kotak:hover{
    background-color: rgb(173, 216, 230);
}
 
.header{
    text-align: center;
    font-size: 35px;
}
 
.header img{
    width: 150px;
    border-radius: 50%;
    margin-top: 10px;
}
 
.footer{
    text-align: center;
    margin-top: 50px;
    font-size: 20px;
}