html,
body {
    flex-direction: row;
    justify-content: center;
    margin: 0;
    padding: 0;
    user-select: none;
    font-family: "Montserrat";
    animation: showing 1.5s;
}

@keyframes showing {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

section {
    position: relative;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100vw;
}

.info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 44%;
    text-align: center;
    color: #2f2f31;
}

.title {
    margin-bottom: 5%;
    font-size: 72px;
    font-weight: 500;
}

.desc {
    width: 75%;
    font-size: 32px;
}

.change-theme {
    position: absolute;
    right: 50px;
    top: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f2f2f2;
    height: 60px;
    width: 60px;
    padding: 10px;
    border-radius: 15px;
    opacity: 0.8;
    cursor: pointer;
}

.theme-icon {
    height: 60px;
    width: 60px;
}

.calculator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
    background-color: #f2f2f2;
    height: 750px;
    width: 500px;
    border-radius: 60px;
}

.display {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    background-color: #2f2f31;
    height: 160px;
    width: 80%;
    border-radius: 30px;
    padding: 25px 25px;
    box-sizing: border-box;
}

.numbers {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    background-color: #aabbe6;
    height: 100%;
    width: 100%;
    border-radius: 15px;
}

.numbers span {
    width: 90%;
    text-align: right;
    font-family: "Digital Display" !important;
    font-size: 90px;
    font-weight: 500;
    color: #3e3e3e;
    letter-spacing: 4px;
}

.btns {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    width: 80%;
}

.sect {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    height: 100%;
}

.mem {
    display: flex;
    flex-direction: row;
    width: 100%;
    margin-bottom: 10px;
}

.btn {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    background-color: #2f2f31;
    height: 75px;
    width: 75px;
    margin: 10px;
    border-radius: 15px;
    cursor: pointer;
}

.btn:active {
    transform: scale(0.9);
}

.clr {
    width: 265px;
}

.del {
    margin-bottom: 20px;
}

.plus {
    height: 170px;
}

.btn span {
    text-align: center;
    font-size: 36px;
    font-weight: bold;
    color: #fff;
}

.frog {
    width: 30%;
    margin-left: 10%;
}

.frog-desc {
    margin-top: 5%;
    font-size: 42px;
    color: #fff;
}