*{
    overflow: hidden;
}
main {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    height: 100vh;

}
.start{
    height: 50px;
    width:100px;
    padding: 15px;
    
}
.start:hover{
    transform: scale(1.2);

}

.box1{
    display: flex;
    flex-direction: column;
}
main::after{
    background-color: #e7f7fa;
    content: "";
    height: 100vh;
    width:100%;
    top:0;
    position: absolute;
    /* background-color: red; */
    z-index: -1;
}
@media(max-width:720px){
    .box1{
        display: flex;
        justify-content: center;
        align-items: center;
    }
}
@media(max-width:480px){
    .todo{
        height: 100px;
    }
}