* {
  margin: 0;
  padding: 0;
}

body {
  font-family: sans-serif;
  margin: 0px;
  color: #505050;
}

a {
  text-decoration: none;
  color: black;
}

.nav{
  width:980px;
  margin:25px auto;
  text-align: center;
}

.nav ul {
    margin: 0 0 10px;
}


.list-inline {
    padding-left: 0;
    margin-left: -5px;
    list-style: none;
}

.list-inline>li {
    display: inline-block;
    padding-right: 5px;
    padding-left: 5px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin-bottom: 0;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.42857143;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -ms-touch-action: manipulation;
    touch-action: manipulation;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-image: none;
    border: 1px solid transparent;
    border-radius: 4px;
}

.btn-isoFilter {
    background: #EDD9C0;
    color: #1a1c1e !important;
    margin: 5px 0;
}

.btn {
    border-radius:20px;
    outline: none;
    color: #785843;
    text-decoration: none;
    letter-spacing: 2px;
    font-weight: bold;
    font-size: 14px;
    -webkit-transition: all .2s ease-in-out;
    -moz-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}

.ad {
  display: block;
  margin: 0 0 30px 0;
  padding: 12px;
  background: white;
  border-radius: 3px;
  box-shadow: 0px 1px 2px 0px rgba(0, 0, 0, 0.05);
  transition: all 220ms;
}
.ad:hover {
  box-shadow: 0px 2px 3px 1px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
  transition: all 220ms;
}
.ad img {
  display: block;
  width: 100%;
  margin: 0 0 24px 0;
}
.ad h2 {
  text-align: center;
  font-size: 14px;
  text-transform: uppercase;
  margin: 0 0 12px 0;
}

.download a{
    color: #ff0000;
}

.download{
    display: block;
    text-align: center;
    width:100%;
    font-size: 14px;
    font-weight: bold;
    color: #ff0000;
}
.wall2 {
    width: 980px;
    margin: 10px auto 0 auto;
    display: table;
    position: relative;
    padding-top: 10px;
    background: #f0f0f0;
}

.wall {
    width: 1000px;
    margin: 10px auto 0 auto;
    display: table;
    position: relative;
    padding-top: 10px;
    background: #f0f0f0;
}
.wall-column {
    display: block;
    position: relative;
    /* width: 33.333333%; */
    width: 25%;
    float: left;
    padding: 0 8px;
    box-sizing: border-box;
}
@media (max-width: 640px) {
  .wall-column {
    width: 50%;
  }
}
@media (max-width: 480px) {
  .wall-column {
    width: auto;
    float: none;
  }
}

.wik{width:980px; margin:0 auto;}
.pros{height: 450px; overflow:hidden; margin-top:10px; margin-bottom: 10px;}
.pros li {
    float: left;
    width: 250px;
    text-align: center;
    border-radius: 3px;
    margin-left: 13px;
    margin-right: 13px;
    overflow: hidden;
    padding: 12px;
    background: white;
    box-shadow: 0px 1px 2px 0px rgba(0, 0, 0, 0.05);
}
.pros a{color: #FFFFFF}
.pros span{width:280px; height: 70px; text-align: center; background: #f4ae00;}
.pros span img{width:140px; height: 48px;padding-top: 11px;}
.pros p img {
    width: 250px;
    height: 376px;
}
.pros h3 {
    height: 50px;
    line-height: 50px;
    font-weight: normal;
    background: #221817;
    display: block;
    word-break: keep-all;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #f2f2f2;
    font-size: 16px;
}
.pros h3 i{color: #c33;}