How to make animation background in big-line to image-box stood static

little a-line - small striped
big-line - big stripes outside the circle
image-box - icon and the circle
<div class="little-line">
<div class="big-line">
<div class="image-box">
<img src="img/icon_bitter.svg" alt="icon-bul">
</div>
</div>
</div>
.little a-line {}
.big-line {
-webkit-animation: spin 0.7 s infinite linear;
-moz-animation: spin 0.7 s infinite linear;
-o-animation: spin 0.7 s infinite linear;
-ms-animation: spin 0.7 s infinite linear;
}
.image-box {}
@-webkit-keyframes spin {
0% { -webkit-transform: rotate(0deg);}
100% { -webkit-transform: rotate(360deg);}
}
@-moz-keyframes spin {
0% { -moz-transform: rotate(0deg);}
100% { -moz-transform: rotate(360deg);}
}
@-o-keyframes spin {
0% { -o-transform: rotate(0deg);}
100% { -o-transform: rotate(360deg);}
}
@-ms-keyframes spin {
0% { -ms-transform: rotate(0deg);}
100% { -ms-transform: rotate(360deg);}
}