Problem with registered fonts

Hi,

i registered 2 different font with @font-face in my style.css of the child theme. One of the the font works fine the other one is not found.

here is my css code:

@font-face {
  font-family: "interstate-regular";
  src: url("/fonts/interstate-regular.eot"); /* IE9*/
  src: url("/fonts/interstate-regular.eot?#iefix") format("embedded-opentype")/*IE6-IE8 */
  url("/fonts/interstate-regular.woff2") format("woff2"), /* chrome、firefox */
  url("/fonts/interstate-regular.woff") format("woff"), /* chrome、firefox */
  url("/fonts/interstate-regular.ttf") format("truetype"), /* chrome、firefox、opera、Safari, Android, iOS 4.2+*/
  url("/fonts/interstate-regular.svg#Interstate-Regular") format("svg"); /* iOS 4.1- */
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "interstate-thin";
  src: url("/fonts/interstate-thin.eot"); /* IE9*/
  src: url("/fonts/interstate-thin.eot?#iefix") format("embedded-opentype"), /* IE6-IE8 */
  url("/fonts/interstate-thin.woff2") format("woff2"), /* chrome、firefox */
  url("/fonts/interstate-thin.woff") format("woff"), /* chrome、firefox */
  url("/fonts/interstate-thin.ttf") format("truetype"), /* chrome、firefox、opera、Safari, Android, iOS 4.2+*/
  url("/fonts/interstate-thin.svg#Interstate Thin") format("svg"); /* iOS 4.1- */
  font-weight: normal;
  font-style: normal;
}

i dont find the mistake. any ideas?