* {
    margin: 0px;
    padding: 0px;
    font-family: Arial, Helvetica, sans-serif
}

body {
    height: 100vh;
    width: 100vw;
    background-image: url('../imagens/fundo-madeira.jpg');
    background-color: #887A5A;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
}

main {
    height: 100vh;
    position: relative;
}

section#celular {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    background-image: url('../imagens/frame-iphone.png');
    background-repeat: no-repeat;

    width: 311px;
    height: 627px;
}

iframe#tela {
    position: relative;
    top: 79px;
    left: 20px;
    width: 270px;
    height: 473px;
}

section#botoes {
    text-align: right;
}

section#botoes img {
    border-radius: 50%;
    width: 50px;
    margin: 10px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.380);
    box-sizing: border-box;
}

section#botoes img:hover {
    border: 2px solid rgba(255, 255, 255, 0.61);
    transform: translate(-3px, -3px);
    box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.664);
    transition: transform 0.3s;
}