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

body{
    background-color: purple;
    background-image: url(img/teclado.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

form{
    background-color: rgba(121, 24, 129, 0.6);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 3%;
}

h3{
    font-size: 50px;
    font-family: sans-serif;
    text-transform: uppercase;
    text-align: center;
    color: white;
    width: 100%;
    text-decoration: underline;
    text-decoration-color: yellow;
}

form input , #comentarios{
    width: 80%;
    font-size: 30px;
    color: black;
    margin-bottom: 20px;
    border: 5px solid rgba(255, 255, 255, 0.0);
    border-bottom: 5px solid black;
    background-color: rgba(255, 255, 255,0.0);
    resize: none;
}

input::placeholder,#comentarios::placeholder{
    color:#ddd;
}
#boton1{
    background-color: yellow;
    border: 5px solid black;
    padding: 1%;
}
#boton1:hover{
    background-color: #333;
    color: yellow;
    transition: 0.7s;
}

input:focus, #comentarios:focus{
    border-color: yellow;
    color:yellow;
    transition: 0.7s;
    transform: scale(1.05);
}

footer{
    background-color: #222;
    text-align: center;
    padding: 20px;
    color: yellow;
    text-transform: uppercase;
    font-family: sans-serif;
}