*{
    padding: 0;
    margin: 0;
    outline: none;
    font-family: Arial;
    animation-duration: 1s;
    transition-duration: 0.5s;
    animation-fill-mode: forwards;
}
 
body {
    background-color: black;
}

input:active {
    opacity: 0.7;
}

.container{
    text-align: center;
    margin: auto;
    margin-top: 5%;
    align-items: center;
    height: 490px;
    width: 270px;
    border-radius: 21px;
    background-color: black;
    padding: 70px 0px 7px 0px;
    box-shadow: 0px 0px 3px gray;
    animation-name: slideDown;
    animation-duration: 2s;
}
@keyframes slideDown {
    0% {
        margin-top: 600px;
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.displayContainer {
    margin-top: -55px;
    width: 98%;
}

.header{
    background-color: none;
    padding: 32px 21px 10px;
    margin: 0px 0px 15px 9px;
    border-radius: 18px;
    background-color: black;
    font-size: xx-large;
    color: white;
    text-align: right;
    font-weight: 1000;
    border: none;
    box-shadow: none;
    cursor: none;
    outline: none;
    max-width: 210px;
    max-height: 70px;
    min-width: 210px;
    min-height: 70px;
}

.backspaceHolderDiv img{
    float: right;
    display: inline;
    margin: 11.5px 11.5px 0px 0px;
    width: 30px;
    height: 25px;
    color: white;
}

.backspaceHolderDiv {
    width: 50px;
    height: 50px;
    margin-left: 200px;
    border-radius: 50%;
    background-color: wheat;
    box-shadow: 0px 0px 5px gray;
    justify-content: center;
    margin-bottom: 10px;
    cursor: pointer;
}

input {
    padding: 21px;
    font-size: large;
    border-radius: 50px;
    border: none;
    box-shadow: 0px 0px 7px rgb(29, 29, 29);
    cursor: pointer;
    animation-name: bounce;
    animation-duration: 1s;
}
@keyframes bounce {
    0% {
        margin-bottom: 300px;

    }
}

button:hover {
    cursor: pointer;
}

#operators {
    background-color: rgb(255, 187, 0);
    float: right;
    margin-right: 20px;
    height: 50px;
    padding: 10px;
    width: 50px;
}

.first-three {
    width: 50px;
    height: 50px;
    background-color: wheat;
    padding: 10px;
}

.first-three:active {
    background-color: rgb(39, 37, 37);
}

#numbers {
    width: 50px;
    height: 50px;
    margin-top: 10px;
    background-color: rgb(39, 37, 37);
    color: white;
    padding: 0px;
}

#zero {
    width: 107px;
    background-color: rgb(39, 37, 37);
    color: white;
    text-align: left;
    margin: 10px 5px 10px 18px;
    padding: 15px 15px 15px 23px;
    float: left;
}

.switch-theme {
    display: block;
    height: 50px;
    padding: 10px;
    margin: 0px 0px 15px 18px;
    width: 85%;
    background-color: wheat;
    color: black;
    text-align: center;
    font-size: large;
    border-radius: 50px;
    border: none;
}

.dot {
    height: 50px;
    width: 50px;
    margin: 10px 0px 0px -15px;
    padding: 10px;
    background-color: rgb(39, 37, 37);
    color: white;
    border-radius: 50px;
}

.buttons-wrapper {
    margin-left: 8px;
}