*, *:before, *:after {
  box-sizing: border-box;
}

body {
    font-family: sans-serif;
    max-width: 60em;
    padding: 0 30px;
    margin: 0 auto;
    text-rendering: optimizeLegibility;
    font-weight: 200;
}
h1,h2,h3,h4,h5,h6 {
    color: #afaf86;
    font-weight: 200;
}
h1 {
    margin-top: 1em;
    font-size: 3em;
}
p,li,td {
    line-height: 1.66;
}
.main {
    padding-bottom: 5vh;
}
.main ul {
    padding-left: 1em;
}
.main li {
    list-style: none;
}
.main li:before {
    content: '•';
    margin-right: .5em;
    color: #afaf86;
}
code {
    color: #af0b0b;
	font-size: 1.1em;
	background: #fbfbfb;
	padding: .1em .2em;
	border-radius: 2px;
}
a {
    color: #0085d5;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
strong, b {
    font-weight: 400;
}
blockquote {
    margin: 0;
    font-family: serif;
	font-style: italic;
    font-size: 1.5em;
    opacity: .66;
}
blockquote p {
    padding: 5px;
    margin: 0;
    text-align: center;
}
.nav-main {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 1.1em;
    height: 100vh;
}
.nav-main:hover {
    opacity: 1;
}
.nav-main ul {
    margin: 0;
    padding: 10px;
    background: rgba(255, 255, 255, 0.99);
}
.nav-main li {
    list-style: none;
}
.nav-main a {
    display: block;
    width: 100%;
    white-space: nowrap;
    color: #afaf86;
	padding: 2px;
}
.nav-main a:before {
    content: '';
}

/* Menu */
#nav-toggle {
    display: inline-block;
    padding: 10px;
    line-height: 1;
    font-size: 2rem;
    color: #afaf86;
    opacity: .5;
    cursor: pointer;
}
#nav-checkbox{
    display: none;
}
.nav-main ul {
    
}
#nav-checkbox:checked ~ ul {
    display: block
}

@media all and (max-width: 960px){
    .nav-main ul, .huy {
        z-index: 1;
        padding: 10px;
        display: none;
    }
}

@media all and (min-width: 961px){
#nav-toggle {
    display: none;
    }
}

.myButton {
    background-color:#44c767;
    border-radius:28px;
    border:1px solid #18ab29;
    display:inline-block;
    cursor:pointer;
    color:#ffffff;
    font-family:Arial;
    font-size:19px;
    padding:16px 31px;
    text-decoration:none;
    text-shadow:0px 1px 0px #1f6315;
}
.myButton:hover {
    background-color:#5cbf2a;
}
.myButton:active {
    position:relative;
    top:1px;
}