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index.php
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index.php
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Exercícios Cores!</title>
<style>
body{
<?php $cor_fundo = $_GET['cor'] ?? "White"; ?>
background-color: <?php echo "$cor_fundo";?> ;
}
#bu{
background-color: orange;
height:50px;
width: 90px;
color: White;
}
</style>
</head>
<body>
<form action="index.php" method="get">
<h4> Selecione Sua Cor: </h4>
<select name="cor" id="cor">
<optgroup label = "Sem cor">
<option value=""> Escolha um cor!</option>
</optgroup>
<optgroup label ="Tons De Azul">
<option value ="blue"> Azul</option>
<option value ="#00008B"> Azul-Escuro</option>
<option value ="#ADD8E6"> Azul-Claro</option>
</optgroup>
<optgroup label ="Tons De Verde">
<option value ="Green"> Verde</option>
<option value ="#006400"> Verde-Escuro</option>
<option value ="lightgreen"> Verde-Claro</option>
</optgroup>
<optgroup label ="Tons De Vermelho">
<option value ="red"> Vermelho</option>
<option value ="#8B0000"> Vermelho-Escuro</option>
<option value ="#4E0000"> Vermelho-Vinho</option>
</optgroup>
<optgroup label ="Tons De Amarelo">
<option value ="Yellow"> Amarelo</option>
<option value ="#FFD700"> Ouro</option>
<option value ="#F0E68C"> Khaki</option>
</optgroup>
</select> <br> <br>
<button type="submit" id="bu"> Ver Cor</button>
</form>
</body>
</html>