html {
    min-height: 100%;
    background-size: cover;
    background-color: #448384;
    /*background: linear-gradient(#9ecacc, #448384 ) ;*/
}
body {
    font-family: "Lato", sans-serif;
}
#main {
    position: absolute;
    top: 0%;
    left: 50%;
    width: 100%;
    height: auto;
    transform: translate(-50%, 0);
    overflow: auto;
}
.pages {
    position: fixed;
    top: 0;
    right: 6.6px;
    height: 70px;
    width: auto;
    cursor: pointer;
    z-index: 10;
}
.sidenav {
    position: absolute;
    height: 0;
    width: 25%;
    z-index: 100;
    top: 0;
    right: 0;
    overflow-x: hidden;
    overflow-y: hidden;
    transition: 0.5s;
    display: none;
    padding: 0 4%; 
    user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
}
#sidenavBox {
    position: absolute;
    width: 100%; /*auto;*/
    height: 100%; /*auto;*/
    left: 50%;
    top: 0;
    transform: translate(-50%, 0);
    clip-path: inset(10%);
    display: block;
    overflow: hidden;
}
#sidenavBoxInner {
    position: absolute;
    width: auto;
    height: 80%;
    left: 50%;
    top: 0%;
    transform: translate(-50%, 0);
}
#menuBg {
    position: absolute;
    right: 0%;
    top: 0%;
    width: 100%;
    height: 100%;
    z-index: 110;
}
#upArrow {
    position: absolute;
    top: 6%;
    left: 50%;
    transform: translate(-60%, 0);
    z-index: 200;
    cursor: pointer;
    display: none;
}
#upArrowBg {
    position: absolute;
    width: 40px;
    height: 40px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(234, 234, 234, 0.8);
    border: solid rgba(113, 113, 113, 0.8) 4px;
    border-radius: 50%;
}
#upArrowTriangle {
    position: absolute;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 20px solid rgba(113, 113, 113, 0.8);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
#downArrow {
    position: absolute;
    left: 50%;
    transform: translate(-60%, 0);
    z-index: 200;
    cursor: pointer;
    display: none;
}
#downArrowBg {
    position: absolute;
    width: 40px;
    height: 40px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(234, 234, 234, 0.8);
    border: solid rgba(113, 113, 113, 0.8) 4px;
    border-radius: 50%;
}
#downArrowTriangle {
    position: absolute;
    width: 0;
    height: 0;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 20px solid rgba(113, 113, 113, 0.8);
}
.sidenav a {
    padding-top: 6%;
    text-decoration: none;
    text-align: right;
    font-size: 16px;
    font-weight: bold;
    text-shadow: 2px 2px 3px rgba(255, 255, 255, 0.5), -2px -2px 3px white, 2px -2px 3px white, -2px 2px 3px white;
    white-space: nowrap;
    color: transparent;
    display: block;
    transition: 0.3s;
}
.sidenav a:hover {
    color: #2f6fff;
    font-style: italic;
    cursor: pointer;
}
.sidenav .closebtn {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 30px;
    margin-left: 4%;
    color: #20204d;
    z-index: 120;
}
#numberPageDiv {
    position: fixed;
    right: 0;
    top: 88px;
    height: 90px;
    width: 76px;
}
#numberPageTitle {
    position: absolute;
    top: 50%;
    left: 0%;
    width: 100%;
    height: auto;
    transform: translate(0, -50%);
}
#pageNumberInput {
    position: relative;
    width: 60%;
    height: 30%;
    top: 75%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    background-color:transparent;
    border: none;
    outline: none;
    z-index: 999;
}
.plus {
    position: fixed;
    right: 9px;
    top: 196px;
    height: 60px;
    width: auto;
    cursor: pointer;
}
.minus {
    position: fixed;
    right: 9px;
    top: 266px;
    height: 60px;
    width: auto;
    cursor: pointer;
}
@media screen and (max-height: 660px) {
    .sidenav a {font-size: 12px;}
    .sidenav a {padding-top: 5%;}
}
#lesson {
    position: fixed;
    left: 50%;
    transform: translate(-50%, 0);
    z-index: 1005;
    display: none;
    background: #448384;
    border-radius: 1%;
    border: solid rgb(228, 228, 228) 5px;
}
#close-icon {
    display:block;
    box-sizing:border-box;
    width:20px;
    height:20px;
    border-width:3px;
    border-style: solid;
    border-color:red;
    border-radius:100%;
    background: -webkit-linear-gradient(-45deg, transparent 0%, transparent 46%, white 46%,  white 56%,transparent 56%, transparent 100%), -webkit-linear-gradient(45deg, transparent 0%, transparent 46%, white 46%,  white 56%,transparent 56%, transparent 100%);
    background-color:red;
    box-shadow:0px 0px 2px 2px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
    cursor: pointer;
    position: fixed;
    top: 0.5%;
    /* right: 0.5%; */
    left: 50%;
    transform: translate(-50%, 0);
}
.page-image {
    position: relative;
    left: 50%;
    transform: translate(-50%, 0);
    width: 50%;
    height: auto;
    margin-top: 10px;
    margin-right: 100px;
}
.icon {
    position: absolute;
    max-width: 290px;
    cursor: pointer;
    z-index: 101;
}
.icon-main-title {
    position: absolute;
    width: 90%;
    height: auto;
    bottom: 0;
    left: 50%;
    transform: translate(-50%, 0);
    z-index: 2;
    cursor: auto;
}
.icon-img {
    position: absolute;
    width: 30%;
    height: auto;
    top: 0%;
    left: 50%;
    transform: translate(-50%, -7px);
    z-index: 1;
}
.icon-title {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, 0);
    text-align: center;
    color: black;
    text-shadow: 2px 2px 3px rgba(255, 255, 255, 0.5), -2px -2px 3px white, 2px -2px 3px white, -2px 2px 3px white;
    z-index: 2;
}