@font-face {
    font-family: "Pacifico";
    src: URL('Pacifico-Regular.ttf') format('truetype');
}

body {
    background-color: lightsalmon;
}

#main {
    width: 280px;
    margin-right: auto;
    margin-left: auto;
    background-color: lightgray;
    margin-top: 40px;
    padding: 20px;
    border-radius: 10px;
    -webkit-box-shadow: 0px 10px 5px 0px rgba(50, 50, 50, 0.75);
    -moz-box-shadow: 0px 10px 5px 0px rgba(50, 50, 50, 0.75);
    box-shadow: 0px 10px 5px 0px rgba(50, 50, 50, 0.75);
    font-family: sans-serif;
}

#header {
    text-align: center;
    margin-bottom: 10px;
    font-family: "Pacifico", cursive;
}

#screen {
    width: 95%;
    height: 25px;
    line-height: 25px;
    padding: 8px;
    border-radius: 10px;
    margin-right: auto;
    margin-left: auto;
    background-color: #8ea386;
    margin-bottom: 50px;
    text-align: right;
    overflow: hidden;
}

#calc-buttons {
    list-style: none;
    padding: 0;
    height: 230px;
}

.calc-button {
    padding-top: 5px;
    padding-bottom: 5px;
    height: 20px;
    line-height: 20px;
    width: 60px;
    margin-left: 5px;
    margin-right: 5px;
    margin-top: 10px;
    margin-bottom: 10px;
    float: left;
    color: white;
    background-color: #454545;
    text-align: center;
    vertical-align: middle;
    border-radius: 5px;
    cursor: default;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.calc-big {
    width: 130px;
}