body{
  background-color: #f8f6f0;
  padding: 5% 5% 5% 5%;
}

button{
    background-color: #279;
    color: #fff;
    border: 0px;
    border-radius: 3px;
    padding: 10px;
    cursor: pointer;
    margin-bottom: 20px;
}

button:hover{
    background-color: #38a;
}

.explicacao {
    border: 1px solid lightgray;
    padding: 0px 5px 5px 5px;
    margin-top: 20px;
    font-size: 12px;
    width: 400px;
}