@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700);

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
body {
    font-family: 'Open Sans', sans-serif;
    background: url("https://pp.vk.me/c633423/v633423092/2745e/NZtBthrAF9k.jpg") no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
.padding {
    padding: 5px 10px 0 10px;
}
.screen {
    height: 100px;
}
.screen input {
    width: 100%;
    height: 100%;
    border: 0;
    background: transparent;
    text-align: right;
}
#history {
    font-size: 1.1rem;
    padding: 0 10px;
    letter-spacing: 5px;
}
#main {
    font-size: 3rem;
    color: #000;
    font-weight: 600;
    padding: 0 10px;
}
.history-screen {
    height: 30%;
}
.main-screen {
    height: 70%;
}
.top {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    line-height: 2rem;
}
.branding {
    flex-grow: 1;
    cursor: default;
    font-size: 0.8rem;
    padding-left: 15px;
}
.window {
    display: flex;
    justify-content: space-between;
    flex-grow: 1;
}
.window > div {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 2rem;
}
.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#calculator {
    width: 300px;
    border: 1px solid #1883d7;
    box-shadow: 0 0 15px 2px rgba(255, 255, 255, 0.2);
    background: #f2f2f2;
}
.row {
    display: flex;
    flex-wrap: wrap;
}
.button {
    width: 25%;
    line-height: 3.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}
.button.close:hover {
    background: #f00;
}
.sub-menu .button {
    line-height: 3rem;
}
.main-menu {
    background: #e6e6e6;
}
.number {
    font-weight: 900;
    font-size: 1.5rem;
}
.number:active {
    font-size: 1.4rem;
}
.button:hover, .button-top:hover {
    background: #cfcfcf;
    cursor: pointer;
}
.button:active {
    background: #b8b8b8;
}
.equals:hover {
    background: #1883d7;
}
.equals:active {
    background: rgb(67, 152, 207);
    background: rgba(67, 152, 207, 0.79);
}
.top .icon {
    width: 16px;
    height: 16px;
}
.icon {
    width: 25px;
    height: 25px;
}
.type {
    display: flex;
}
.column {
    display: flex;
    align-items: center;
}
.history {
    flex-grow: 6;
    justify-content: flex-end;
}
.button-top {
    display: flex;
    padding: 10px 15px;
    pointer-events: none;
}
.menu {
    flex-grow: 1;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}
.image:active img {
    width: 24px;
    height: 24px;
}
.sign:active {
    font-size: 0.9rem;
}
.dot {
    font-weight: 900;
    font-size: 1.5rem;
}
.dot:active {
    font-size: 1.4rem;
}
.calculator-menu:hover {
    background: #cfcfcf;
    cursor: pointer;
}
.calculator-chosen {
    font-size: 1rem;
    letter-spacing: 2px;
    cursor: default;
    padding: 10px 12px;
    font-weight: 900;
}
.memory {
    display: flex;
    font-size: 0.75rem;
    color: #757575;
}
.memory > div:hover {
    color: #000;
    background: #cfcfcf;
    cursor: pointer;
}
.memory > div {
    flex-grow: 1;
    text-align: center;
    line-height: 2rem;
    pointer-events:none;
}
#plus-minus {
    pointer-events: none;
}
