.clear {
  clear: both;  
}

.alert {
  padding: 5px 10px 5px 10px;
  margin-bottom: 5px;
}

.alert-dismissable .close {
  top: 0px;
  right: 0px;
}

.content {
  padding-top: 10px;  
  margin-right: auto;
  margin-left: auto; 
}

.button {
  display: block;
  float: left;
  border-radius: 6px;
  border: 1px solid #b6e2fb;
  font-weight: bold;
  margin: 0px 5px 10px 5px;
}

.button .color_eng{
  color: #22A7F5; 
}
.button .color_cn{
  color: #333;
}

.btn_default {
  background-color: #ffffff;
  /*background-image: url(../img/dreamcard_bg.gif);*/
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center; 
}

.btn_choosed {
  /*background-image: url(../img/dreamcard_highlighted.gif);*/
  background-color: #75c3ed;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center;
} 

.btn_choosed .color_eng{
  color: #fff; 
}

.btn_choosed .color_cn{
  color: #fff;
}

.block {
  display: block;
}

@media(max-width:500px) {
  .gray_area {
    background: #f0f0f0;
    padding-top: 25px; 
    padding-bottom: 20px;
    border-radius: 10px;
  }

  #btn_submit {

  }
}

@media(min-width:501px) and (max-width:767px) {
  .gray_area {
    background: #f0f0f0;
    padding-top: 45px; 
    padding-bottom: 40px;
    border-radius: 10px;
  }

}

@media(max-width:767px) {
  .block {
    line-height: 20px;
  }

  .content {
    padding-left: 5px;
    padding-right: 5px; 
  }

  #btn_submit,.btn_last_or_next {
    padding: 5px 10px;
    font-size: 12px;
    line-height: 1.5;
    border-radius: 3px;
  }
}

@media(min-width:768px) {
  .gray_area {
    background: #f0f0f0;
    padding-top: 45px; 
    padding-bottom: 40px;
    border-radius: 10px;
  }
  .content {
    width: 708px;  
  }
  .button {
    width: 226px;
    height: 136px;
    font-size: 16px;
  }
  .block {
    line-height: 22px;
  }

  #btn_submit,.btn_last_or_next {
    padding: 6px 14px;
    font-size: 16px;
    line-height: 1.33;
    border-radius: 4px;
  }
}

@media(min-width:992px) {
  .content {
    width: 944px;  
  }
  .button {
    width: 226px;
    height: 136px;
    font-size: 16px;
  }
  #btn_submit,.btn_last_or_next {
    padding: 10px 16px;
    font-size: 18px;
    line-height: 1.33;
    border-radius: 6px;
  }
}

.margin_bottom_30 {
  margin-bottom: 30px;
}

.margin_right_5 {
  margin-right: 5px;
}

.pull_center {
  float: none;
  margin-left: auto;
  margin-right: auto;
}

.button.disabled {
  cursor: auto;
  pointer-events: none;
  opacity: .65;
}

.hgroup h2 {
  margin: 0px;
}

button:focus {
  outline: none;
}