main.css

@import url('https://fonts.googleapis.com/css2?family=Pacifico&display=swap');

body {
    min-height: 100vh;
    background: black;
    font-family: 'Pacifico', cursive;
}

header h1{
    font-size: 3em;
    color: whitesmoke;
    text-align: center;
}

main {
    display: flex;
    align-items: center;
    justify-content: center;
}
.imagens {
    flex: 0 0 80%;
    min-height: 70vh;
    background: url(img/dog1.png)center/cover no-repeat;
    box-shadow: 5px 5px 3px rgba(245, 245, 245, 0.603);
    position: relative;
}

.botao {
    display: inline-block;
    background: whitesmoke;
    color: black;
    border: 3px solid black;
    border-radius: 8px;
    font-size: 1.2em;
    padding: 0.5em;
    box-shadow: 2px 2px rgba(245, 245, 245, 0.603);
    outline: none;
    font-family: 'Pacifico', cursive;
}

.botaoAnterior {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translate(-50%,-50%);
}

.botaoPosterior {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%,-50%);
}

.botao:active {
    background: rgb(248, 210, 217);
}