.container-principal {
    display: flex;
    justify-content: center; 
    align-items: center;    
    height: 100vh;         
    width: 100%;
    background-color: #e2e8f0; 
}


.caixa-central {
    width: 320px;
    height: 200px;
    background-color: #ffffff;  
    border: 3px solid #3b82f6; 
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;

}