contato.css

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

body {
    width: 100%;
    height: 100vh;
    background-image: url(img/fundo-forms.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

form {
    background-color: white;
    max-width: 500px;
    height: 400px;
    padding: 40px;
    border-radius: 20px;
}

form h1 {
    text-align: center;
    font-size: 30px;
    color: #194b5a;
}

form p {
    text-align: center;
    margin: 20px 0;
}

.input-single {
    position: relative;
    margin: 20px 0;
}

.input-single label {
    position: absolute;
    left: 0;
    bottom: 5px;
    transition: all 0.2s;
    cursor: text;
}

.input {
    width: 100%;
    border: 0;
    border-bottom: 2px solid #ccc;
    padding: 5px;
    font-size: 17px;
    outline: 0;
}

form .input-single .input:focus ~ label,
form .input-single .input:valid ~ label{
    transform: translateY(-24px);
    font-size: 12px;
    color: #194b5a;
}