Linear gradient not displaying properly

Hi everyone,

I am currently trying the background from this post Customizations: Using CSS in SAP Design Studio Dashboards

background:

linear-gradient(27deg, #151515 5px, transparent 5px) 0 5px,

linear-gradient(207deg, #151515 5px, transparent 5px) 10px 0px,

linear-gradient(27deg, #222 5px, transparent 5px) 0px 10px,

linear-gradient(207deg, #222 5px, transparent 5px) 10px 5px,

linear-gradient(90deg, #1b1b1b 10px, transparent 10px),

linear-gradient(#1d1d1d 25%, #1a1a1a 25%, #1a1a1a 50%, transparent 50%, transparent 75%, #242424 75%, #242424);

background-color: #131313;

background-size: 20px 20px;

However only the last two rows are taking into account so I only have a black background.

Do you know what could be the issue?

I am running the application on latest design studio release

Java (build 1.7.0_71-b14)

Windows 7 entreprise 64 bit

Best regards,

Alexandre