diff --git a/addons/l10n_ch/static/src/scss/report_isr.scss b/addons/l10n_ch/static/src/scss/report_isr.scss
index 83de6851409..9f651c8abd6 100644
--- a/addons/l10n_ch/static/src/scss/report_isr.scss
+++ b/addons/l10n_ch/static/src/scss/report_isr.scss
@@ -53,19 +53,19 @@ body.l10n_ch_isr #isr {
 
     #voucher {
         height: 4in;
-        width: 2 + 4/10in;
+        width: 2.4in;
 
         position: absolute;
         /* header title of BVR section */
-        top: 1/6in;
+        top: 0.167in;
         /* right of voucher corresponds to left of slip */
-        right: 5 + 9/10in;
+        right: 5.9in;
     }
 
     #voucher > * {
         position: absolute;
         /* default left margin for fields content */
-        left: 3/20in;
+        left: 0.15in;
 
         &#voucher-for-contact {
             top: 0.25in;
@@ -81,19 +81,19 @@ body.l10n_ch_isr #isr {
 
         &#voucher-bank {
             top: 1.51in;
-            left: 11/10in;
+            left: 1.1in;
         }
 
         /* TODO: remove in master */
         &#voucher-currency {
-            top: 9/6 + 3/20in;
+            top: 1.65in;
 
             font-size: 12px;
             font-weight: 600;
         }
 
         &#voucher-amount_units {
-            width: 15/10in;
+            width: 1.5in;
             top: 1.84in;
 
             text-align: right;
@@ -101,9 +101,9 @@ body.l10n_ch_isr #isr {
         }
 
         &#voucher-amount_cents {
-            width: 4/10in;
+            width: 0.4in;
             top: 1.84in;
-            left: 20/10in;
+            left: 2in;
 
             font-size: 14px;
         }
@@ -115,11 +115,11 @@ body.l10n_ch_isr #isr {
 
     #slip {
         height: 4in;
-        width: 5 + 9/10in;
+        width: 5.9in;
 
         position: absolute;
         /* header title of BVR section */
-        top: 1/6in;
+        top: 0.167in;
         /* right of slip corresponds to right of slip */
         right: 0;
     }
@@ -127,7 +127,7 @@ body.l10n_ch_isr #isr {
     #slip > * {
         position: absolute;
         /* default left margin for fields content */
-        left: 3/20in;
+        left: 0.15in;
 
         &#slip-for-contact {
             top: 0.25in;
@@ -143,19 +143,19 @@ body.l10n_ch_isr #isr {
 
         &#slip-bank {
             top: 1.51in;
-            left: 11/10in;
+            left: 1.1in;
         }
 
         /* TODO: remove in master */
         &#slip-currency {
-            top: 9/6 + 3/20in;
+            top: 1.65in;
 
             font-size: 12px;
             font-weight: 600;
         }
 
         &#slip-amount_units {
-            width: 15/10in;
+            width: 1.5in;
             top: 1.84in;
 
             text-align: right;
@@ -163,9 +163,9 @@ body.l10n_ch_isr #isr {
         }
 
         &#slip-amount_cents {
-            width: 4/10in;
+            width: 0.4in;
             top: 1.84in;
-            left: 20/10in;
+            left: 2in;
 
             font-size: 14px;
         }
@@ -183,8 +183,8 @@ body.l10n_ch_isr #isr {
         }
 
         &#slip-optical-line {
-            right: 3/10in;
-            bottom: 4/6in;
+            right: 0.3in;
+            bottom: 0.667in;
 
             /* Positioning is set for OCRB of Tsukurimashou Font Family */
             font-family: OCRB, Courier, monospace;
@@ -203,8 +203,8 @@ body.l10n_ch_isr #isr {
 
         /* TODO: remove in master */
         &#slip-optical {
-            right: 3/10in;
-            bottom: 4/6in;
+            right: 0.3in;
+            bottom: 0.667in;
 
             text-align: right;