*{
    margin: 0;
    padding:0;
    box-sizing: border-box;
}

body{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background-image: linear-gradient(120deg,#9fddf0, #e2c48c);
    background-repeat: no-repeat;
    height: 100vh;
    width: 100%;
    box-sizing: border-box;
}
.container{
    height: 100vh;
    width: 100%;
    position: relative;
}

.main{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    text-align: center;
    width: 500px;
    height: 400px;
    margin: auto;
    background-color: rgb(188, 212, 160);
    padding: 20px;
    border-radius: 10px;
    box-shadow: #fdd68e;
    

}
@media screen and (max-width:450px){
    .main{
        width: 300px;
        margin: auto;
    }

}
h2{
    font-size: 30px;
    font-weight: 600;
    color: rgb(121, 132, 231);
    margin: 8px auto;
}

#w,#h{
    margin-top: 5px;
    padding: 5px;
}
input{
    color: #222f3e;
    text-align: center;
    font-size: 20px;
    font-weight: 200;
    outline: none;
    border: none;
    background: none;
    border-bottom: 2px solid #341f97;
    width: 200px;
    margin: 10px;
    padding: 5px;
}
label{
    margin-right: 8px;
    margin-bottom: 0px;
    padding-bottom: 0px;
    text-align: left;
    line-height: 10px;
    user-select: none;
    font-weight: bold;
}

#result{
    color: #341f97;
    margin: 10px auto;
}
#btn{
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-weight: 600;
    margin-top: 10px;
    border: none;
    color: rgb(11, 78, 141);
    background-image: linear-gradient(120deg,#cfe2e1, #5f27cd);
    width: 150px;
    padding: 10px;
    border-radius: 30px;
    outline: none;
    cursor: pointer;
}

#note{
    font-size: 12px;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-weight: 600;
    color: #7e7b7b;
    user-select: none;
    margin: 8px;
}