diff --git a/src/wp-admin/css/themes.css b/src/wp-admin/css/themes.css
index 8aed203aec..79124523d6 100644
a
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b
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body.full-overlay-active { |
1805 | 1805 | #customize-container iframe, |
1806 | 1806 | .theme-install-overlay iframe { |
1807 | 1807 | height: 100%; |
1808 | | width: 100%; |
| 1808 | width: 100vw; |
1809 | 1809 | z-index: 20; |
1810 | 1810 | transition: opacity 0.3s; |
1811 | 1811 | } |
… |
… |
body.full-overlay-active { |
1888 | 1888 | position: absolute; |
1889 | 1889 | z-index: 0; |
1890 | 1890 | background-color: #f0f0f1; |
| 1891 | overflow: auto; |
1891 | 1892 | } |
1892 | 1893 | |
1893 | 1894 | .customize-loading #customize-container { |