* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html{
    scroll-behavior: smooth;
}

:root{
    --primaria: #4f46e5;
    --segundaria: #7c3aed;
    --escuro: #0f172a;
    --maisEscuro: #0a0f1c;
    --claro: #e2e8f0;
    --vidro: rgba(255, 255; 255, 0.1);
}

body {
    background-color: var(--escuro);
    color: white;
}

header {
    display: flex;
    justify-content: center;
    background-color: var(--escuro)
}
h1{
    font-family: Arial, Helvetica, sans-serif;
    font-size: 50px;
    background-color: var(--escuro);
    display: flex;
    justify-content: center;
    color: white;
    box-shadow:10px 10px 70px 9px rgba(69,69,153,1);
    border-radius: 30px;
    width: 500px;
    align-items: center;
    padding: 10px;
    margin-top: 10px;
}

.form-calculadora {
    display: flex;
    flex-direction: column;
    color: white;
    margin: 50px auto;
    box-shadow:10px 10px 80px 9px rgba(69,69,153,1);
    border-radius: 30px;
    width: 500px;

}

 .form-caixa{
    font-size: 30px;
    font-weight: bold;
    display: flex;
    margin-top: 8px;
    justify-content: center;
    
}

.caixa-numerica{
    margin: 30px auto;
    padding: 10px;
    background: var(--escuro);
    border-radius: 8px;
    color: white;
}

.selecionar-caixa{
    margin: 30px auto;
    padding: 10px;
    background: var(--escuro);
    color: white;
    border-radius: 8px;
}

a {
    text-decoration: none;
    color: white;
    background: var(--escuro);
    width: 90px;
    height: 50px;
    display: flex;
    margin: 0 auto;
    margin-bottom: 20px;
    border-radius: 8px;
    padding: 5px;
    justify-content: center;
    align-items: center;
}

a:hover {
     background: var(--primaria);
     box-shadow:10px 10px 50px 9px rgba(69,69,153,1);

}

.resp-calculadora{
    background: var(--primaria);
    width: 90px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px auto;
    padding: 5px;
    border-radius: 8px;
    box-shadow:10px 10px 50px 9px rgba(69,69,153,1);
}