background: linear-gradient(45deg, #b0dddf 0%, #a8a2de 33%, #d8e8ac 66%, #efbab1 100%);
    -webkit-clip-path: polygon(0 0, 70% 0, 75% 100%, 0 100%);
    clip-path: polygon(0 0, 70% 0, 75% 100%, 0 100%);
}http://journeytothestars.jcink.net/index.php?act=Pages&pid=1

https://codepen.io/selkieskins/pen/rNajxMr

backdrop-filter: blur(5px);

<script src="https://kit.fontawesome.com/66e864331c.js" crossorigin="anonymous"></script>

@import url('https://fonts.googleapis.com/icon?family=Material+Icons');
@import url('https://use.fontawesome.com/releases/v5.0.0/css/all.css');
@import url('http://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css');
@import url('https://dl.dropbox.com/s/8pgvqqn4asn2kk6/pe-icon-7-filled.css');
@import url('http://static.tumblr.com/i5s2zks/6kOohwlux/pe-icon-7-stroke.css');
@import url('https://dl.dropbox.com/s/n2hh2ev2uht67os/font-epic-outlines.css');
@import url('https://cdn.linearicons.com/free/1.0.0/icon-font.min.css');

@font-face {
  font-family: Pokemon;
  src: url(http://forumstatic.ru/files/001a/15/92/98199.ttf);
}

@font-face{font-family:"Ionicons";src:url("../fonts/ionicons.eot?v=2.0.1");src:url("../fonts/ionicons.eot?v=2.0.1#iefix") format("embedded-opentype"),url("../fonts/ionicons.ttf?v=2.0.1") format("truetype"),url("../fonts/ionicons.woff?v=2.0.1") format("woff"),url("../fonts/ionicons.svg?v=2.0.1#Ionicons") format("svg");font-weight:normal;font-style:normal}

@font-face {
    font-family: 'icomoon';
    src:url('../fonts/icomoon/icomoon.eot?pvm5gj');
    src:url('../fonts/icomoon/icomoon.eot?#iefixpvm5gj') format('embedded-opentype'),
        url('../fonts/icomoon/icomoon.woff?pvm5gj') format('woff'),
        url('../fonts/icomoon/icomoon.ttf?pvm5gj') format('truetype'),
        url('../fonts/icomoon/icomoon.svg?pvm5gj#icomoon') format('svg');
    font-weight: normal;
    font-style: normal;
}