Animate text fill from left to right - css

Question

I wanted to animate a the text fill with CSS. The Text should be filled with color from left to right.
this is my CSS:
.box-with-text {
background-image: -webkit-linear-gradient(right, crimson 50%, white 50%);
background-repeat: repeat;
background-position: 0 0;
background-size: 200% 100%;
-webkit-text-fill-color: transparent;
-webkit-background-clip: text;
-webkit-animation: stripes normal forwards ease-in-out;
animation: stripes 2s normal forwards ease-in-out;
}
Now only the first letter is color-filled.
here is the fiddle

Answer 1

you may also take a look at flex (for centering things) and mix-blend-mode, so it can be avalaible also for Firefox:
.box-with-text {
text-transform: uppercase;
font: bold 26vmax/.8 Open Sans, Impact;
background: black;
display: table;
color: white;
mix-blend-mode: multiply
}
#-webkit-keyframes stripes {
to {
background-size:100% 100%;
}
}
#keyframes stripes {
to {
background-size:100% 100%;
}
}
html {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
-webkit-box-align:center;
-webkit-align-items:center;
-ms-flex-align:center;
align-items:center;
height: 100%;
background: black;
}
body {
margin: auto;
background: -webkit-linear-gradient( crimson , crimson) turquoise no-repeat 0 0;
background: linear-gradient( crimson , crimson) turquoise no-repeat 0 0;
background-size: 0 100%;
-webkit-animation: stripes 2s linear infinite;
animation: stripes 2s linear infinite;
}
<div class="box-with-text">
Text
</div>
http://codepen.io/gc-nomade/pen/XKNKzd

Answer 2

/* Main styles */
#import url(http://fonts.googleapis.com/css?family=Open+Sans:800);
.box-with-text {
background-image: -webkit-linear-gradient(left, crimson 50%, white 50%);
background-repeat: repeat;
background-position: 0 0;
background-size: 100% 200px;
-webkit-text-fill-color: transparent;
-webkit-background-clip: text;
-webkit-animation: stripes 2s linear infinite;
animation: stripes 2s linear infinite;
}
#-webkit-keyframes stripes {
100% {
background-position: 0 -50px;
}
}
#keyframes stripes {
100% {
background-position: 385px 0;
}
}
/* Other stuff */
body {
overflow: hidden;
background: #000;
color: #FFF;
}
.box-with-text {
position: absolute;
top: 50%;
left: 50%;
white-space: nowrap;
text-align: center;
text-transform: uppercase;
font: bold 26vmax/.8 Open Sans, Impact;
-webkit-transform: translateX(-50%) translateY(-50%);
-ms-transform: translateX(-50%) translateY(-50%);
transform: translateX(-50%) translateY(-50%);
}
<div class="box-with-text">
Text
</div>
In this case you should change
#keyframes stripes {
100% {
background-position: 385px 0;
}
}
position depends on text width;