*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@100&display=swap');
body{
    background-color: #3498db;
}
.main{
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
#box{
    width:  40%;
   
    padding: 15px;
    box-shadow: 0px 0px 5px grey;
    background-color: #fff;
    border-radius: 5px;
}   
.row{
    width: 100%;
    margin: 2rem;
    margin-left: 0;
}
.btn{
    width: 100%;
    padding: 5px;
    font-size: 20px;
    color: #fff;
    border: none;
    border-radius: 5px;
    background-color: #3498db;
}