styles.css

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

body {
    min-height: 100vh;
    font-family: Lato, Helvetica, sans-serif;
    background: linear-gradient(to right, #36d1dc, #5b86e5);
    padding: clamp(20px, 5vw, 50px) 10px 10px;
}

.container{
    max-width: 850px ;
    background: #f1f1f1;
    border: 1px solid #36363692;
    padding: 25px;
    margin: 0 auto;
    border-radius: 5px;
    box-shadow: 0 4px 5px rgba(0, 0, 0,3);
}

h1 {
    font-family: Raleway, sans-serif;
    font-size: 40px;
    text-align: center;
    margin-bottom: 40px;
    font-weight: 400;
}

h1 span {
    font-weight: 700;
}

.inputs-container {
    display: flex;
    justify-content: center;
}

.inputs-container label{
    display: block;
    margin-bottom: 10px;
    margin-left: 5px;
}

.inputs-container input {
    min-width: 350px;
    font-size: 15px;
    margin-bottom: 10px;
    padding: 10px;
    border: none;
    border-bottom: 1px solid #333;
    box-shadow: 0 2px 5px rgba(0, 0, 0,5);
    border-radius: 5px;
}

.inputs-container input:focus {
    outline: 1px solid #222222be;
}

form button {
    font-size: 20px;
    min-width: 150px;
    margin: 40px auto;
    display: block;
    padding: 10px;
    border: none;
    font-weight: 700;
    border-radius: 5px;
    color: #333;
    cursor: pointer;
    background: #fabe33;
    box-shadow: 0 2px 5px rgba(0, 0, 0,5);
}

form button:hover{
    background: #f2b527;
}

.info {
    text-align: center;
}

.bmi-value{
    font-size: 45px;
    margin-bottom: 5px;
    font-weight: bolder;
}

.result {
    font-family: Raleway, sans-serif;
    font-size: 20px;
}

@media screen and (max-width:800px){
    .container {
        max-width: 600px;

    }

    .inputs-container{
        flex-direction: column;
        align-items: center;
    }
}

@media screen (min-width:300px) {
    .input-group {
        width: 100%;
    }

    .input-group input {
        width: 100%;
        min-width: auto;
    }
}