html {
    background-color: #394e3a;
    --main-bg-color: brown;
}

.case-wrapper {
    margin-right: auto; /* 1 */
    margin-left:  auto; /* 1 */
    margin-top: 50px;
    width: 75vw;
    max-width: 500px; /* 2 */
  
    padding-right: 10px; /* 3 */
    padding-left:  10px; /* 3 */
}

.case {
    background-color: #55828b;
    border:11px solid #3b6064;
    border-radius: 10px;
    box-shadow: 0 0 10px #111010;

}

.display {
    display: flex;
    border: 1px solid #111010;
    font-size: 30px;
    font-weight: 500;
    flex-direction: column;
    background-color: #c9e4ca;
    margin: 20px 10px;
    border-radius: 7px;
    gap: 20px;
}

.acummulated {
    justify-content: center;
    display: flex;
    justify-content: left;
}

.actual-value{
    display: flex;
    justify-content: right;
    margin-bottom: 10px;
}

.buttons{
    justify-content: stretch;
    font-size: 40px;
    display: grid;
    grid-template-columns: 3fr 1fr;
    margin: 70px 15px 0;
    gap: 10px;
    height: 50vh;
}


.numbers{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
}

.operators{
    display: grid;
    flex-direction: column;
    gap: 2px;
}

.clear,.delete {
    background-color: goldenrod;
    font-size: 30px;
}

button{
    font-size: inherit;
    padding: 0;
    border-radius: 5px; 
    box-shadow: 0 0 5px #C9E4CA;
}

button:hover {
    background-color: #364958;
    color: azure;
}

p {
    margin: -1px 5px;
    font-size: 40px;
    height: 1em;
}

.operators > button:hover {
    background-color: var(--main-bg-color);
}