diff --git a/src/components/ConfigCover.js b/src/components/ConfigCover.js
index abaea2b..66c33d0 100644
--- a/src/components/ConfigCover.js
+++ b/src/components/ConfigCover.js
@@ -118,7 +118,7 @@ class ConfigCover extends React.Component {
 						<div className="d-flex flex-row">
 							<div className="input-sm">
 								<label>Size</label>
-								<input type="number" className="form-control " value={this.state.borderSize} onChange={(e) => this.setState({ borderSize: e.target.value })} />
+								<input type="number" max="200" className="form-control " value={this.state.borderSize} onChange={(e) => this.setState({ borderSize: e.target.value })} />
 							</div>
 
 							<div className="input-sm">
diff --git a/src/components/CoverImage.css b/src/components/CoverImage.css
index ad33a45..7ea6cf8 100644
--- a/src/components/CoverImage.css
+++ b/src/components/CoverImage.css
@@ -8,7 +8,7 @@
     width:800px;
     padding:90px;
     border-radius:2px;
-    
+    overflow-y: hidden;
 
 }