@font-face {
    font-family: 'yekan';
    src: url('../Areas/Content/fonts/Yekan/iranyekanwebregular.eot?#') format('eot'), /* IE6?8 */ url('../Areas/Content/fonts/Yekan/iranyekanwebregular.woff') format('woff'), /* FF3.6+, IE9, Chrome6+, Saf5.1+*/ url('../Areas/Content/fonts/Yekan/iranyekanwebregular.ttf') format('truetype'); /* Saf3?5, Chrome4+, FF3.5, Opera 10+ */
}

html, body {
  height: 100%;
  overflow: hidden;
}

.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    font-family: yekan;
}
    .error-page h1 {
        font-size: 50px;
        font-weight: bold;
        position: relative;
        margin: -8vh 0 0;
        padding: 0;
    }
.error-page h1:after {
  content: attr(data-h1);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  color: transparent;
  /* webkit only for graceful degradation to IE */
  background: -webkit-repeating-linear-gradient(-45deg, #71b7e6, #69a6ce, #b98acc, #ee8176, #b98acc, #69a6ce, #9b59b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 400%;
  text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.25);
  animation: animateTextBackground 10s ease-in-out infinite;
}
.error-page h1 + p {
  color: #d6d6d6;
  font-size: 20px;
  font-weight: normal;
  line-height: 5vh;
  max-width: 600px;
  position: relative;
}
.error-page h1 + p:after {
  content: attr(data-p);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  color: transparent;
  text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.5);
  -webkit-background-clip: text;
  -moz-background-clip: text;
  background-clip: text;
}

#particles-js {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

@keyframes animateTextBackground {
  0% {
    background-position: 0 0;
  }
  25% {
    background-position: 100% 0;
  }
  50% {
    background-position: 100% 100%;
  }
  75% {
    background-position: 0 100%;
  }
  100% {
    background-position: 0 0;
  }
}
@media (max-width: 767px) {
    .error-page h1 {
        font-size: 20px;
    }
    .error-page h1 + p {
        font-size: 20px;
        line-height: 10vw;
        max-width: 70vw;
    }
}