สอบถาม code css ตัวนี้หน่อยครับ ว่าหมายถึงอะไร
@media all and (max-width: 800px), only screen and (-webkit-min-device-pixel-ratio: 2) and (max-width: 1024px), only screen and (min--moz-device-pixel-ratio: 2) and (max-width: 1024px), only screen and (-o-min-device-pixel-ratio: 2/1) and (max-width: 1024px), only screen and (min-device-pixel-ratio: 2) and (max-width: 1024px), only screen and (min-resolution: 192dpi) and (max-width: 1024px), only screen and (min-resolution: 2dppx) and (max-width: 1024px) {
#cssmenu {
background: #84bd4a;
}
#cssmenu > ul {
display: none;
}
#cssmenu > ul.open {
display: block;
border-top: 1px solid rgba(0, 0, 0, 0.1);
}
#cssmenu.align-right > ul {
float: none;
}
#cssmenu.align-center > ul {
text-align: left;
}
#cssmenu > ul > li,
#cssmenu.align-right > ul > li {
float: none;
display: block;
}
#cssmenu > ul > li > a {
padding: 18px 25px 18px 25px;
border-right: 0;
}
#cssmenu > ul > li:hover > a,
#cssmenu > ul > li.active > a {
background: rgba(0, 0, 0, 0.1);
}
#cssmenu #menu-button {
display: block;
text-decoration: none;
font-size: 13px;
font-weight: 700;
color: #ffffff;
padding: 18px 25px 18px 25px;
text-transform: uppercase;
letter-spacing: 1px;
background: url('
https://static1.squarespace.co...11b5a2a67/1481110155496/bg.png ');
cursor: pointer;
}
#cssmenu ul ul,
#cssmenu ul li:hover > ul,
#cssmenu > ul > li > ul,
#cssmenu ul ul ul,
#cssmenu ul ul li:hover > ul,
#cssmenu.align-right ul ul,
#cssmenu.align-right ul li:hover > ul,
#cssmenu.align-right > ul > li > ul,
#cssmenu.align-right ul ul ul,
#cssmenu.align-right ul ul li:hover > ul {
left: 0;
right: auto;
top: auto;
opacity: 1;
width: 100%;
padding: 0;
position: relative;
text-align: left;
}
#cssmenu ul ul li {
width: 100%;
}
#cssmenu ul ul li a {
width: 100%;
box-shadow: none;
padding-left: 35px;
}
#cssmenu ul ul ul li a {
padding-left: 45px;
}
#cssmenu ul ul li:first-child > a,
#cssmenu ul ul li:last-child > a {
border-radius: 0;
}
#cssmenu #menu-button::after {
display: block;
-webkit-box-sizing: content-box;
-moz-box-sizing: content-box;
box-sizing: content-box;
content: '';
position: absolute;
height: 3px;
width: 22px;
border-top: 2px solid #ffffff;
border-bottom: 2px solid #ffffff;
right: 25px;
top: 18px;
}
#cssmenu #menu-button::before {
display: block;
content: '';
position: absolute;
height: 3px;
width: 22px;
border-top: 2px solid #ffffff;
right: 25px;
top: 28px;
}
#cssmenu > ul > li.has-sub > a::after,
#cssmenu ul ul li.has-sub > a::after {
display: none;
}
}