a:hover {
  text-decoration: none;
}
  
/* title */
/* hide title */
.main-title {
  text-indent: -9999px;
  margin: 0;
  padding: 0;
  height: 0;
}
  
/* intro title */
.intro-title {
  color: #465860;
  font-size: 45px;
  text-transform: uppercase;
  margin: 20px 0;
  font-weight: bold;
}
  
@media (max-width: 960px) {
  .intro-title {
    font-size: 26px;
  }
}

@media (max-width: 480px) {
  .intro-title {
    text-align: center;
  }
}
  
/* common main title */
.common-title {
  color: #465860;
  font-size: 45px;
  text-transform: uppercase;
  margin: 25px 0;
  padding-bottom: 20px;
  text-align: center;
  font-weight: bold;
}
 
@media (max-width: 1440px) {
  .common-title {
    font-size: 38px;
  }
}

@media (max-width: 960px) {
  .common-title {
    font-size: 32px;
  }
}

@media (max-width: 480px) {
  .common-title {
    color: #465860;
    font-size: 28px;
    margin: 0;
    z-index: 200;
    position: relative;
  }
}

/* model series title */
.common-subtitle {
  color: #465860;
  font-size: 28px;
  margin: 0 auto;
  /* width: 40%; */
  text-align: center;
  font-weight: bold;
  padding: 10px 0;
  line-height: 1.2;
}

@media (max-width: 1440px) {
  .common-subtitle {
    font-size: 20px;
    line-height: 1.2;
  }
}

@media (max-width: 960px) {
  .common-subtitle {
    font-size: 20px;
    line-height: 1.2;
  }
}
  
/* step,buynow title */
.common-third-title {
  color: #465860;
  font-size: 20px;
  margin: 5px 0;
  width: 100%;
  text-align: center;
  font-weight: bold;
}
  
@media (max-width: 960px) {
  .common-third-title {
    color: #465860;
    font-size: 18px;
  }
}
  
/* context*/
/* common main text */
.common-text {
  color:#4e4e4e;
  font-size: 20px;
  line-height: 32px;
  font-family: 'DINPro-Regular';
}

@media (max-width: 960px) {
  .common-text {
    font-size: 14px;
    line-height: 1.4;
  }
}
  
/* model series text */
.common-subText {
  color: #4e4e4e;
  font-size: 20px;
  line-height: 26px;
  margin-bottom: 20px;
  text-align: center;
}

@media (max-width: 1440px) {
  .common-subText {
    font-size: 16px;
  }
}

@media (max-width: 960px) {
  .common-subText {
    line-height: 1.4;
  }
}

/* feature text */
.common-feature-text {
  font-size: 14px;
  line-height: 1.2;
}
  
/* step,buynow text */
.common-third-text {
  color: #4e4e4e;
  font-size: 20px;
  line-height: 26px;
  margin-bottom: 20px;
  font-weight: bold;
  text-align: center;
}

@media (max-width: 960px) {
  .common-third-text{
    font-size: 14px;
    line-height: 1.4;
  }
}

.hidden {
  display: none;
}
  
article {
  background: #f3f7f9;
}

/* step border */
.red-border {
  border: 2px solid #c0293a;
}
  
.dark-border {
  border: 2px solid #88ab8f;
}
  
/* back to model btn */
.btn-top {
  display: inline-block;
  float: right;
}

.btn-top span {
  border: 2px solid #4e4e4e;
  padding: 10px 15px;
}
  
.btn-top img {
  -webkit-transform: rotate(180deg);
    transform: rotate(180deg);
}
  
.btn-top:hover {
  background-color: #fcfcfc;
  color: #0d133a;
}
  
.btn-top:hover i {
  font-size: 20px;
}

@media (max-width: 960px) {
  .btn-top span {
    border: 2px solid #4e4e4e;
    padding: 5px 10px;
  }
}