Почему на мобильных устройствах съезжают псевдо элементы?

@font-face {
    font-family: 'Gotham Pro Black';
    src: url('/fonts/GothamPro-Black.eot');
    src: url('/fonts/GothamPro-Black.eot?#iefix') format('embedded-opentype'),
    url('/fonts/GothamPro-Black.woff') format('woff'),
    url('/fonts/GothamPro-Black.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}
@font-face {
    font-family: 'Gotham Pro Medium';
    src: url('/fonts/GothamPro-Medium.eot');
    src: url('/fonts/GothamPro-Medium.eot?#iefix') format('embedded-opentype'),
    url('/fonts/GothamPro-Medium.woff') format('woff'),
    url('/fonts/GothamPro-Medium.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}
@font-face {
    font-family: 'Museo Sans 900 Black';
    src: url('/fonts/MuseoSansCyrl-900.eot');
    src: url('/fonts/MuseoSansCyrl-900.eot?#iefix') format('embedded-opentype'),
    url('/fonts/MuseoSansCyrl-900.woff') format('woff'),
    url('/fonts/MuseoSansCyrl-900.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    }
@font-face {
    font-family: 'Gotham Pro Regular';
    src: url('/fonts/GothamPro.eot');
    src: url('/fonts/GothamPro.eot?#iefix') format('embedded-opentype'),
    url('/fonts/GothamPro.woff') format('woff'),
    url('/fonts/GothamPro.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}
@font-face {
    font-family: 'Myriad Pro Regular';
    src: url('/fonts/MyriadPro-Regular.eot');
    src: url('/fonts/MyriadPro-Regular.eot?#iefix') format('embedded-opentype'),
    url('/fonts/MyriadPro-Regular.woff') format('woff'),
    url('/fonts/MyriadPro-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}