remove the clickable links on the three service blocks on my homepage

Hello, I am using your theme on my WordPress website www.tatashinesmama.com , I would like to remove the clickable links on the three service blocks on my homepage ("Pre-Conception," "grossesse et accouchement," and "Post-Natal"). I have tried using CSS to disable the links, but it has not worked :

<span class="hljs-selector-class">.service-item</span> <span class="hljs-selector-tag">a</span> { 
<span class="hljs-attribute">cursor</span>: default; 
<span class="hljs-attribute">pointer-events</span>: none; 
<span class="hljs-attribute">text-decoration</span>: none; }

Can you please provide me with guidance on how to achieve this, or a customized code that I can use? Thank you."