body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background: rgb(14, 187, 226);
    transform: translate(-50% -50%);
}

.box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width:400px;
    height:600px;
    padding: 80px 40px;
    box-sizing: border-box;
    background: rgba(0,0,0,0.5);
}

h2 {
    padding:10px;
    margin: 0;
    text-align: center;
    color: rgb(255,217,9);
}

.textb, .but {
    width: 100%;
    margin-bottom: 20px;
}

.labelb {
    font-weight: bold;
    color: #fff;
}

.textb {
    border: none;
    border-bottom: 3px solid #fff;
    outline: none;
    height: 40px;
    color: #fff;
    font-size: 14px;
    background-color: transparent;
}

.l1 {
    font-weight: bold;
    color: #fff;
    font-size: 14px;
}

::placeholder {
    color: rgba(255,255,255,.5);
}

.but {
    border: none;
    outline: none;
    height: 40px;
    font-size: 16px;
    color: #fff;
    background-color: rgb(70, 246, 16);
    cursor: pointer;
    border-radius: 20px;
    transition: .3s ease-in-out;
}

    .but:hover {
        background-color: rgb(255,217,9);
    }

.lab {
    font-weight: bold;
    text-align: center;
}