.contraprova-aviso {
   box-sizing: border-box;
   width: calc(100% - 20px);
   max-width: 1350px;
   margin: 0 auto 20px;
   padding: 12px 16px;
   border: 1px solid #f0c36d;
   border-left-width: 4px;
   border-radius: 6px;
   background-color: #fff8e5;
   color: #5c4400;
   font-size: 15px;
}

.contraprova-aviso p {
   margin: 0;
}

.contraprova-aviso p + p {
   margin-top: 8px;
}