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

body {
    background-image: url('/img/fundo.jpg');
    background-size: cover; 
    background-repeat: no-repeat; 
}

.container {
    padding: 10px;
}

body, html {
    height: 100%;
    overflow: hidden;
}

.bordas {
    border: solid #ddd;
    border-radius: 50%;
    padding: 10px;
    width: 28%;
    margin: 0 auto;
    margin-top: -2rem;
    margin-bottom: 2rem;
}

.h2-cima {
    margin-bottom: 3rem;
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    padding: 10px;
    border-top: 5px solid #000;
    border-bottom: 5px solid #000;
    color: #373737;
}

.footer {
    text-align: center;
    align-items: center;
    width: 100%;
    height: 50px;
    position: absolute;
    bottom: 0;
    left: 0;
    color: #000;
    font-size: 20px;
}

a {
    text-decoration: none;
    color: #000;
}