body {
    background-color:#E5ECFB;
}

.caixa {
    font-family: Tahoma;
    text-align: center;
    color: #0D1931;
    /* border: solid 1px #0D1931;
    border-radius: 20px;
    padding: 50px 10px;
    width: 100px;
    margin: 10px; */
}

#segundos, #decimos, #pontos {
    font-size:2em;
  }

button {
    color: #0D1931;
    font-size: 1.2em;
    border: solid 1px #0D1931;
    padding: 18px 10px;
    width: 180px;
    margin: 10px;
    background-color:#E5ECFB;
    
}