</head>
<body>
- <div style="position: absolute; top: 25px; left: 0; opacity: 0.5;">
+ <div style="position: absolute; top: 25px; left: 0; opacity: 0.75;">
<math>
<mrow>
<mo>(</mo>
</math>
</div>
- <div style="position: absolute; top: 25px; left: 0; opacity: 0.5;">
+ <div style="position: absolute; top: 25px; left: 0; opacity: 0.75;">
<math>
<mrow>
<mo>(</mo>