/* 1. Cartão Básico */
.cartao {
    width: 250px;
    height: 150px;
    border: 2px solid blue;
    padding: 15px;
    margin-bottom: 30px;
}

/* 2. Botão Flutuante */
.botao {
    display: inline-block;
    border-radius: 8px;
    padding: 10px 20px;
    box-shadow: 2px 2px 5px gray;
    background: #f2f2f2;
    margin-bottom: 30px;
}

/* 3. Container Centralizado */
.container {
    width: 80%;
    min-height: 300px;
    margin: 0 auto;
    border: 1px dashed black;
    margin-top: 30px;
    margin-bottom: 30px;
}

/* 4. Moldura Irregular */
.moldura-irregular {
    border-radius: 5px 50px 5px 50px;
    margin: 10px 20px 30px 40px;
    border: 2px solid #333;
    padding: 15px;
}

/* 5. Bloco com Sombra 3D */
.bloco-3d {
    width: 200px;
    height: 200px;
    border: 5px double #000;
    box-shadow: 8px 8px 0px #000;
    padding: 15px;
    margin-bottom: 40px;
}

/* 6. Resetando margens e bordas */
.resetado {
    margin: 0;
    padding: 0;
    border: none;
    width: 400px;
}

/* 7. Círculo Perfeito */
.circulo {
    width: 100px;
    height: 100px;
    background: orange;
    border-radius: 50%;
    margin: 20px;
}

/* 8. Borda 4x */
.borda4x {
    border-left: 5px solid black;
    border-bottom: 2px dotted black;
    border-top: none;
    border-right: none;
    padding-left: 15px;
    margin: 20px 0;
}

/* 9. Card com sombra interna */
.card-interno {
    width: 300px;
    height: 150px;
    border-radius: 12px;
    border: 1px solid #333;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
    margin-top: 50px;
    padding: 20px;
}

/* 10. Layout Duas Colunas */
.coluna {
    display: inline-block;
    vertical-align: top;
    height: 400px;
    padding: 10px;
    border: 1px solid #ccc;
}

.coluna1 {
    width: 30%;
}

.coluna2 {
    width: 70%;
}